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server.test.js
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server.test.js
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import { expect } from '@playwright/test';
import { test } from '../../../utils.js';
import { fetch } from 'undici';
import { createHash, randomBytes } from 'node:crypto';
/** @typedef {import('@playwright/test').Response} Response */
test.skip(({ javaScriptEnabled }) => javaScriptEnabled);
test.describe.configure({ mode: 'parallel' });
test.describe('Caching', () => {
test('caches pages', async ({ request }) => {
const response = await request.get('/caching');
expect(response.headers()['cache-control']).toBe('public, max-age=30');
});
});
test.describe('Content-Type', () => {
test('sets Content-Type on page', async ({ request }) => {
const response = await request.get('/content-type-header');
expect(response.headers()['content-type']).toBe('text/html');
});
});
test.describe('Content-Length', () => {
test('sets Content-Length on page', async ({ request }) => {
const response = await request.get('/content-length-header');
// TODO this would ideally be a unit test of `Server`,
// as would most of the tests in this file
if (!response.headers()['content-encoding']) {
expect(+response.headers()['content-length']).toBeGreaterThan(1000);
}
});
});
test.describe('Cookies', () => {
test('does not forward cookies from external domains', async ({ request, start_server }) => {
const { port } = await start_server(async (req, res) => {
if (req.url === '/') {
res.writeHead(200, {
'set-cookie': 'external=true',
'access-control-allow-origin': '*'
});
res.end('ok');
} else {
res.writeHead(404);
res.end('not found');
}
});
const response = await request.get(`/load/fetch-external-no-cookies?port=${port}`);
expect(response.headers()['set-cookie']).not.toContain('external=true');
});
});
test.describe('CSRF', () => {
test('Blocks requests with incorrect origin', async ({ baseURL }) => {
const res = await fetch(`${baseURL}/csrf`, {
method: 'POST',
headers: {
'content-type': 'application/x-www-form-urlencoded'
}
});
expect(res.status).toBe(403);
expect(await res.text()).toBe('Cross-site POST form submissions are forbidden');
});
});
test.describe('Endpoints', () => {
test('HEAD with matching headers but without body', async ({ request }) => {
const url = '/endpoint-output/body';
const responses = {
head: await request.head(url),
get: await request.get(url)
};
const headers = {
head: responses.head.headers(),
get: responses.get.headers()
};
expect(responses.head.status()).toBe(200);
expect(responses.get.status()).toBe(200);
expect(await responses.head.text()).toBe('');
expect(await responses.get.text()).toBe('{}');
['date', 'transfer-encoding'].forEach((name) => {
delete headers.head[name];
delete headers.get[name];
});
expect(headers.head).toEqual(headers.get);
});
test('Prerendered +server.js called from a non-prerendered +server.js works', async ({
baseURL
}) => {
const res = await fetch(`${baseURL}/prerendering/prerendered-endpoint/proxy`);
expect(res.status).toBe(200);
expect(await res.json()).toStrictEqual({
message: 'Im prerendered and called from a non-prerendered +page.server.js'
});
});
test('invalid request method returns allow header', async ({ request }) => {
const response = await request.post('/endpoint-output/body');
expect(response.status()).toBe(405);
expect(response.headers()['allow'].includes('GET'));
});
// TODO all the remaining tests in this section are really only testing
// setResponse, since we're not otherwise changing anything on the response.
// might be worth making these unit tests instead
test('multiple set-cookie on endpoints using GET', async ({ request }) => {
const response = await request.get('/set-cookie');
const cookies = response
.headersArray()
.filter((obj) => obj.name === 'set-cookie')
.map((obj) => obj.value);
expect(cookies).toEqual([
'answer=42; HttpOnly',
'problem=comma, separated, values; HttpOnly',
'name=SvelteKit; path=/; HttpOnly'
]);
});
// TODO see above
test('body can be a binary ReadableStream', async ({ request }) => {
const interruptedResponse = request.get('/endpoint-output/stream-throw-error');
await expect(interruptedResponse).rejects.toThrow('socket hang up');
const response = await request.get('/endpoint-output/stream');
const body = await response.body();
const digest = createHash('sha256').update(body).digest('base64url');
expect(response.headers()['digest']).toEqual(`sha-256=${digest}`);
});
// TODO see above
test('stream can be canceled with TypeError', async ({ request }) => {
const responseBefore = await request.get('/endpoint-output/stream-typeerror?what');
expect(await responseBefore.text()).toEqual('null');
const interruptedResponse = request.get('/endpoint-output/stream-typeerror');
await expect(interruptedResponse).rejects.toThrow('socket hang up');
const responseAfter = await request.get('/endpoint-output/stream-typeerror?what');
expect(await responseAfter.text()).toEqual('TypeError');
});
// TODO see above
test('request body can be read slow', async ({ request }) => {
const data = randomBytes(1024 * 256);
const digest = createHash('sha256').update(data).digest('base64url');
const response = await request.put('/endpoint-input/sha256', { data });
expect(await response.text()).toEqual(digest);
});
});
test.describe('Errors', () => {
test('invalid route response is handled', async ({ request }) => {
const response = await request.get('/errors/invalid-route-response');
expect(/** @type {import('@playwright/test').APIResponse} */ (response).status()).toBe(500);
expect(await response.text()).toMatch(
'Invalid response from route /errors/invalid-route-response: handler should return a Response object'
);
});
test('unhandled http method', async ({ request }) => {
const response = await request.put('/errors/invalid-route-response');
expect(response.status()).toBe(405);
expect(await response.text()).toMatch('PUT method not allowed');
});
test('error evaluating module', async ({ request }) => {
const response = await request.get('/errors/init-error-endpoint');
expect(response.status()).toBe(500);
expect(await response.text()).toMatch('thisvariableisnotdefined is not defined');
});
test('returns 400 when accessing a malformed URI', async ({ page }) => {
const response = await page.goto('/%c0%ae%c0%ae/etc/passwd');
if (process.env.DEV) {
// Vite will return a 500 error code
// We mostly want to make sure malformed requests don't bring down the whole server
expect(/** @type {Response} */ (response).status()).toBeGreaterThanOrEqual(400);
} else {
expect(/** @type {Response} */ (response).status()).toBe(400);
}
});
test('stack traces are not fixed twice', async ({ page }) => {
await page.goto('/errors/stack-trace');
expect(await page.textContent('#message')).toBe(
'This is your custom error page saying: "Cannot read properties of undefined (reading \'toUpperCase\')"'
);
// check the stack wasn't mutated
await page.goto('/errors/stack-trace');
expect(await page.textContent('#message')).toBe(
'This is your custom error page saying: "Cannot read properties of undefined (reading \'toUpperCase\')"'
);
});
test('throw error(...) in endpoint', async ({ request, read_errors }) => {
// HTML
{
const res = await request.get('/errors/endpoint-throw-error', {
headers: {
accept: 'text/html'
}
});
const error = read_errors('/errors/endpoint-throw-error');
expect(error).toBe(undefined);
expect(res.status()).toBe(401);
expect(await res.text()).toContain(
'This is the static error page with the following message: You shall not pass'
);
}
// JSON (default)
{
const res = await request.get('/errors/endpoint-throw-error');
const error = read_errors('/errors/endpoint-throw-error');
expect(error).toBe(undefined);
expect(res.status()).toBe(401);
expect(await res.json()).toEqual({
message: 'You shall not pass'
});
}
});
test('throw redirect(...) in endpoint', async ({ page, read_errors }) => {
const res = await page.goto('/errors/endpoint-throw-redirect');
expect(res?.status()).toBe(200); // redirects are opaque to the browser
const error = read_errors('/errors/endpoint-throw-redirect');
expect(error).toBe(undefined);
expect(await page.textContent('h1')).toBe('the answer is 42');
});
test('POST to missing page endpoint', async ({ request }) => {
const res = await request.post('/errors/missing-actions', {
headers: {
accept: 'text/html'
}
});
expect(res?.status()).toBe(405);
const res_json = await request.post('/errors/missing-actions', {
headers: {
accept: 'application/json'
}
});
expect(res_json?.status()).toBe(405);
expect(await res_json.json()).toEqual({
type: 'error',
error: {
message: 'POST method not allowed. No actions exist for this page'
}
});
});
test('error thrown in handle results in a rendered error page or JSON response', async ({
request
}) => {
// HTML
{
const res = await request.get('/errors/error-in-handle', {
headers: {
accept: 'text/html'
}
});
expect(res.status()).toBe(500);
expect(await res.text()).toContain(
'This is the static error page with the following message: Error in handle'
);
}
// JSON (default)
{
const res = await request.get('/errors/error-in-handle');
const error = await res.json();
expect(error.stack).toBe(undefined);
expect(res.status()).toBe(500);
expect(error).toEqual({
message: 'Error in handle'
});
}
});
test('expected error thrown in handle results in a rendered error page or JSON response', async ({
request
}) => {
// HTML
{
const res = await request.get('/errors/expected-error-in-handle', {
headers: {
accept: 'text/html'
}
});
expect(res.status()).toBe(500);
expect(await res.text()).toContain(
'This is the static error page with the following message: Expected error in handle'
);
}
// JSON (default)
{
const res = await request.get('/errors/expected-error-in-handle');
const error = await res.json();
expect(error.stack).toBe(undefined);
expect(res.status()).toBe(500);
expect(error).toEqual({
message: 'Expected error in handle'
});
}
});
});
test.describe('Load', () => {
test('fetching a non-existent resource in root layout fails without hanging', async ({
request
}) => {
const response = await request.get('/errors/error-in-layout');
expect(await response.text()).toContain('Error: 404');
});
test('fetch does not load a file with a # character', async ({ request }) => {
const response = await request.get('/load/static-file-with-hash');
expect(await response.text()).toContain('status: 404');
});
test('includes origin header on non-GET internal request', async ({ page, baseURL }) => {
await page.goto('/load/fetch-origin-internal');
expect(await page.textContent('h1')).toBe(`origin: ${new URL(baseURL).origin}`);
});
test('includes origin header on external request', async ({ page, baseURL, start_server }) => {
const { port } = await start_server((req, res) => {
if (req.url === '/') {
res.writeHead(200, {
'content-type': 'application/json',
'access-control-allow-origin': '*'
});
res.end(JSON.stringify({ origin: req.headers.origin }));
} else {
res.writeHead(404);
res.end('not found');
}
});
await page.goto(`/load/fetch-origin-external?port=${port}`);
expect(await page.textContent('h1')).toBe(`origin: ${new URL(baseURL).origin}`);
});
});
test.describe('Routing', () => {
test('event.params are available in handle', async ({ request }) => {
const response = await request.get('/routing/params-in-handle/banana');
expect(await response.json()).toStrictEqual({
key: '/routing/params-in-handle/[x]',
params: { x: 'banana' }
});
});
test('/favicon.ico is a valid route', async ({ request }) => {
const response = await request.get('/favicon.ico');
expect(response.status()).toBe(200);
const data = await response.json();
expect(data).toEqual({ surprise: 'lol' });
});
});
test.describe('Shadowed pages', () => {
test('Action can return undefined', async ({ baseURL, request }) => {
const response = await request.post('/shadowed/simple/post', {
form: {},
headers: {
accept: 'application/json',
origin: new URL(baseURL).origin
}
});
expect(response.status()).toBe(200);
expect(await response.json()).toEqual({ data: '-1', type: 'success', status: 204 });
});
});
test.describe('Static files', () => {
test('static files', async ({ request }) => {
let response = await request.get('/static.json');
expect(await response.json()).toBe('static file');
response = await request.get('/subdirectory/static.json');
expect(await response.json()).toBe('subdirectory file');
expect(response.headers()['access-control-allow-origin']).toBe('*');
response = await request.get('/favicon.ico');
expect(response.status()).toBe(200);
});
test('does not use Vite to serve contents of static directory', async ({ request }) => {
const response = await request.get('/static/static.json');
expect(response.status()).toBe(process.env.DEV ? 403 : 404);
});
test('Vite serves assets in allowed directories', async ({ page, request }) => {
await page.goto('/assets');
const path = await page.textContent('h1');
if (!path) throw new Error('Could not determine path');
const r1 = await request.get(path);
expect(r1.status()).toBe(200);
expect(await r1.text()).toContain('http://www.w3.org/2000/svg');
// check that we can fetch a route which overlaps with the name of a file
const r2 = await request.get('/package.json');
expect(r2.status()).toBe(200);
expect(await r2.json()).toEqual({ works: true });
});
test('Filenames are case-sensitive', async ({ request }) => {
const response = await request.get('/static.JSON');
expect(response.status()).toBe(404);
});
test('Serves symlinked asset', async ({ request }) => {
const response = await request.get('/symlink-from/hello.txt');
expect(response.status()).toBe(200);
expect(await response.text()).toBe('hello');
});
});
test.describe('setHeaders', () => {
test('allows multiple set-cookie headers with different values', async ({ page }) => {
const response = await page.goto('/headers/set-cookie/sub');
const cookies = (await response?.allHeaders())['set-cookie'];
expect(cookies.includes('cookie1=value1') && cookies.includes('cookie2=value2')).toBe(true);
});
});
test.describe('cookies', () => {
test('cookie.serialize created correct cookie header string', async ({ page }) => {
const response = await page.goto('/cookies/serialize');
const cookies = await response.headerValue('set-cookie');
expect(
cookies.includes('before=before') &&
cookies.includes('after=after') &&
cookies.includes('endpoint=endpoint')
).toBe(true);
});
});
test.describe('Miscellaneous', () => {
test('does not serve version.json with an immutable cache header', async ({ request }) => {
// this isn't actually a great test, because caching behaviour is down to adapters.
// but it's better than nothing
const response = await request.get('/_app/version.json');
const headers = response.headers();
expect(headers['cache-control'] || '').not.toContain('immutable');
});
});